Al2O3/SiO2 and HfO2/SiO2 dichroic mirrors for UV solid-state lasers

Year: 2009

Authors: Grilli M.L., Menchini F., Piegari A., Alderighi D., Toci G., Vannini M.

Autors Affiliation: Optical Coatings Group, Physics Technologies and Materials Division, ENEA, Via Anguillarese 301, 00123 Rome, Italy; IFAC-CNR, Via Madonna del Piano, 50019 Sesto Fiorentino, FI, Italy

Abstract: HfO2/SiO2 and Al2O3/SiO2 multilayers to be employed as high reflectance end mirrors in Cerium-doped fluoride solid-state lasers were produced by radio frequency sputtering. The components were designed to have high transmittance at the pumping wavelength and high reflectance in a wavelength band corresponding to the active medium emission. A photoacoustic beam deflection technique and inspection of the irradiated area under a microscope were used to measure the laser induced damage threshold of the mirrors at the pumping wavelength. These coatings were tested in a laser cavity.

Journal/Review: THIN SOLID FILMS

Volume: 517 (5)      Pages from: 1731  to: 1735

More Information: This work was funded by the Minister of University and Scientific Research (MIUR) in the frame of the project \”Impianti innovativi multiscopo per la produzione di radiazione X e ultravioletta, coerente ed incoerente ad alta intensita per applicazioni avanzate nel campo delle strutture biologiche, molecolari e dei materiali\”.
KeyWords: Cerium; Hafnium compounds; Laser damage; Lasers; Optical coatings; Pumping (laser); Reflection; Silicon compounds; Solid state lasers, Active mediums; Beam deflection techniques; Dichroic mirrors; High transmittances; Irradiated areas; Laser cavities; Laser induced damage thresholds; Pumping wavelengths; Radio frequencies; UV laser; Wavelength bands, Mirrors
DOI: 10.1016/j.tsf.2008.09.047

Citations: 27
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